Counties in California by gini index

Tehama County had the highest gini index of 58 counties in 2021, at 51.5 index. Mono County had the lowest, at 39.2 index. The median was 45.8 index and the figure for California was 48.7 index. Source: the U.S. Census Bureau.

Highest51.5Tehama County
Lowest39.2Mono County
Median45.858 counties
California48.7History

All counties, 2021

CSVChart (SVG)

Tehama CountyTehama County: 51.5 index51.5San Francisco CountySan Francisco County: 51.2 index51.2Marin CountyMarin County: 51 index51Lake CountyLake County: 50.2 index50.2Los Angeles CountyLos Angeles County: 49.7 index49.7Trinity CountyTrinity County: 49.5 index49.5Yolo CountyYolo County: 49.2 index49.2San Mateo CountySan Mateo County: 48.9 index48.9Butte CountyButte County: 48.9 index48.9Humboldt CountyHumboldt County: 48.5 index48.5Santa Barbara CountySanta Barbara County: 48.4 index48.4Napa CountyNapa County: 47.7 index47.7Nevada CountyNevada County: 47.5 index47.5Fresno CountyFresno County: 47.4 index47.4El Dorado CountyEl Dorado County: 47.3 index47.3Santa Cruz CountySanta Cruz County: 47.2 index47.2Colusa CountyColusa County: 46.9 index46.9Mendocino CountyMendocino County: 46.8 index46.8Contra Costa CountyContra Costa County: 46.8 index46.8Santa Clara CountySanta Clara County: 46.7 index46.7Orange CountyOrange County: 46.6 index46.6Shasta CountyShasta County: 46.6 index46.6Siskiyou CountySiskiyou County: 46.5 index46.5Kern CountyKern County: 46.5 index46.5Plumas CountyPlumas County: 46.5 index46.5Merced CountyMerced County: 46.4 index46.4Alameda CountyAlameda County: 46.3 index46.3San Diego CountySan Diego County: 46.2 index46.2Tulare CountyTulare County: 45.9 index45.9Imperial CountyImperial County: 45.8 index45.8Sutter CountySutter County: 45.6 index45.6Sierra CountySierra County: 45.4 index45.4Sonoma CountySonoma County: 45.4 index45.4Amador CountyAmador County: 45.4 index45.4Monterey CountyMonterey County: 45.3 index45.3Riverside CountyRiverside County: 45.2 index45.2San Luis Obispo CountySan Luis Obispo County: 45.1 index45.1Tuolumne CountyTuolumne County: 45 index45Ventura CountyVentura County: 44.8 index44.8San Joaquin CountySan Joaquin County: 44.6 index44.6Sacramento CountySacramento County: 44.6 index44.6Del Norte CountyDel Norte County: 44.4 index44.4Inyo CountyInyo County: 44.2 index44.2Stanislaus CountyStanislaus County: 44 index44Placer CountyPlacer County: 44 index44San Bernardino CountySan Bernardino County: 43.9 index43.9Madera CountyMadera County: 43.9 index43.9Mariposa CountyMariposa County: 43.7 index43.7Calaveras CountyCalaveras County: 43.3 index43.3Yuba CountyYuba County: 43.2 index43.2Alpine CountyAlpine County: 42.9 index42.9Glenn CountyGlenn County: 42.6 index42.6Solano CountySolano County: 41.7 index41.7Kings CountyKings County: 41.1 index41.1Modoc CountyModoc County: 40.9 index40.9San Benito CountySan Benito County: 40.8 index40.8Lassen CountyLassen County: 40.3 index40.3Mono CountyMono County: 39.2 index39.2
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

Other periods

About this ranking

Income inequality on a 0 to 100 scale, where 0 is perfect equality.

Eurostat, equivalised disposable income after social transfers (EU-SILC), for the EU and its countries. For other countries use gini_index_world_bank, which is measured on a different basis. For the United States, ACS five-year estimate B19083 measures inequality in household money income before taxes. Census publishes a coefficient from 0 to 1; Invokely multiplies it by 100. The displayed year is the final year of the five-year period. Negative household incomes are treated as zero. This differs from the EU-SILC measure based on equivalised disposable income and should not be treated as directly comparable.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Tehama County, with 51.5 index in 2021, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Mono County, with 39.2 index in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). Retrieved 2026-10-10.

Gini index: other rankings

Counties in California: more rankings